Java applet socket problem

[modalman]

Hi. I'm writing an applet that uses ftp. Whenever I try to set up a socket just before using the PORT command I get errors. Is this because I need to have permissions set in order to set this socket up?

My code to set the socket up isI is a socket that I am using on port 21 to send commands to the server):

try{
localAddress = I.getInetAddress();
svrSkt=new ServerSocket(0,1,localAddress);
}
catch(Exception e){
}

The error I get is:

com.ms.security.SecurityExceptionEx[d.tryPortPasv]: cannot access 0
at com/ms/security/permissions/NetIOPermission.check (NetIOPermission.java)
at com/ms/security/PolicyEngine.deepCheck (PolicyEngine.java)
at com/ms/security/PolicyEngine.checkPermission (PolicyEngine.java)
at com/ms/security/StandardSecurityManager.chk (StandardSecurityManager.java)
at com/ms/security/StandardSecurityManager.checkListen (StandardSecurityManager.java)
at java/net/ServerSocket.<init> (ServerSocket.java)
at d.tryPortPasv (d.java)
at Explorer.doCmd (Explorer.java)
at Explorer.getDirList (Explorer.java)

Huge thanks in advance for any help. ASCII silly question, get a silly ANSI